Process for production of lead acetate



May 18 1926. v

R. PLAIUELN PRocEss FOR PR'oDUcHoNoF LEAD ACETATE Filed nay 2o, 1924 o Q V l ,L

" l a continuous blown in between the total quantity of the v 4 "35 quantitative oxidation of suitable air without the necessity of injurious breaking-up i, :w possible according to t vraw lead or lead ores containin e5' the very expensive twicesreiined soft Patented May 13,1926.

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Processes are known for-the oxidation of vmetallic lead in acetic acid ora solution of lead acetate with airfor the purpose of o btaining neutral or b asicsu ar of lead solu-- l tions y (see .Zeitschrift r angewandte Chemie, book 5, 3rd-February, 1911,.' pages V The practieability of the oxidation process referred to is dependent upon obtaining intimate contact of the air lead threads on the one hand and the` con- .11 tinual regular circulation of the solvent on vthe other hand. In the known processes a '16 baking 'together of the lead masses occurs so that it is necessary to open'outthe air assages and toloosen the lead mass, whic is often as manual labor at'intervals of from two-to 20 three days, which can' only .be effected with diiliculty whilst' aifectin the health of the workmen. It has now providing a regular vertical circulation of the liqui solvent it is possible yto eiect the of lead by blowing in ordinary1 compressed t e extremely l method and whilst excluding an excess rassure. It'- is even ant'imony whichv couldhitherto not be use and could only be oxidized with diiiiculty in the same 'manner and to-the same practicalf extenlt-a which hasbeen used hitherto. v

- In the accompanying drawing is illus.4

`-trated by way of example a suitable plant Afor learryingout the present process.

40 AFigure 1' showsa sectional .elevation'and Figure 2 shows a cross section.

In a cylindrical chamber a of about seven meters in height and twometers in diameter there is mounted concentrically a lead con- '.45tainer .b which is preferably tapered up.- wardly and is open at the top and bottom.

i This container b is constructed of wood or sheet copper with the dimensions 6 x 1 meters. In the interior yof this chamber?) 5 and at the bottom thereof there is arrangedan air nozzle construction c arranged in the l l j' shape of a tripod, these` nozzles being mounted on a perforated annular pipe which connects the various nozzle devices together.

hard as stone, within the boiler byeen found that by quantities e inventionl to treat.

this lead. container every second section is shortened at `the bottom by 5 cm. At the u per'end ot the container there is provided dlrectly below the level of the liquld or on f the level of the liquid a band -shaped perforated plate e which is laboutV 10 cm.'wide. 'lhe container is filled to substantially the top thereof with lead. threads (l0 to 12 tons). The' principle of vthe oxidationl process is as follows: .Y

Com ressed air. enters through the lateral pipe d into thel tripod of nozzles c and flows through the column of lead; The' saturated lead oxide solution formed in the interior' of the, chamber o b the rapid absorption of lead oxide is cause to pass through the perforated band by the action of the air into the solution contained in the outer chamber, and which is specifically lighter, and' thus produces a continuous circulation. y

The ractical advantages of the invention areas ollows: f r

4 1. By means o'f the .abovev process 1.75 tons of metallic lead are converted into neu# tral or 4basic leadsugar within six to eight hours by the use of ten to twelve tons of -lead for treatment.` According to the known processes this result iss-obtained in eight to fteenv hours with the treatment of thirty to forty tons of lead.

2. This favourable result is obtained without excess pressure and the injurious breaking upof the lead masses by manuallabor I' i' is eliminated. l l 3. By means of the above` process it isposso sible .to deal with the same rapidity with raw and scrap lead containing antimony and `'which is only oxidizable with diiiiculty in Vthe same manner as the twice refined so Havi nowparticularly described and as- 'certain thenature of mysaid invention, and in what manner the same is to be performed,l declare that what I claim is:

, 1. v'.lhe'herein described method of produc,... ics `ing lead acetates from metallic lead, ce

ing in placin -lead in a liquid lead sf. of acetic aci character, and torcial pressed air upwardly through the ma `the lead and solvent, causing a continuer i vertical Vcirculation by means of theconsA pressed air through the solvent. p f.

` 2. The herein described method of pro ducing lead acetates from metallic lead, contin the oxidizing air which imparts circulsisting in placing lead in a liquid lead sollatlon to"- the solvent to be discharged while vent of acetic acid character, forcing combeing distributed over the' cross sectional 10 pressed air upwardly through the mass of area of the lead.

5 the lead and. solvent, causing a continuous In Witness whereof I a'x my signature.

vertical circulation byA means of the -compressed air through thev solvent and permit- RUDOLF PLAELN. 

